Kidney CT Appearances

Bosniak 3 Cyst CT Findings

• Cyst may be multilocular, hemorrhagic, and/or infected
• Wall is irregularly thick with enhancement
• Irregular or nodular calcification
• Findings are suspicious for renal cell carcinoma

Other Information About Bosniak 3 Cysts

Etiology:

• Unknown

Epidemiology:

• Typically presents after age 50

Presentation:

• Typically asymptomatic
• Abdominal or flank pain
• Fever
• Hematuria

Prognosis:

• About half of Bosniak 3 cysts are malignant

Related Pearls: Renal Cysts and Cystic Disease